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  On the nature of the vestibular control of arm reaching movements during whole-body rotations

Bresciani, J.-P., Blouin, J., Vercher, J., & Gauthier, G. (2005). On the nature of the vestibular control of arm reaching movements during whole-body rotations. Experimental Brain Research, 164(4), 431-441. doi:10.1007/s00221-005-2263-4.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-D6B5-D Version Permalink: http://hdl.handle.net/21.11116/0000-0004-D79D-9
Genre: Journal Article

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Bresciani, J-P1, 2, Author              
Blouin , J, Author
Vercher, J, Author
Gauthier, G, Author
Affiliations:
1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: Recent studies report efficient vestibular control of goal-directed arm movements during body motion. This contribution tested whether this control relies (a) on an updating process in which vestibular signals are used to update the perceived egocentric position of surrounding objects when body orientation changes, or (b) on a sensorimotor process, i.e. a transfer function between vestibular input and the arm motor output that preserves hand trajectory in space despite body rotation. Both processes were separately and specifically adapted. We then compared the respective influences of the adapted processes on the vestibular control of arm-reaching movements. The rationale was that if a given process underlies a given behavior, any adaptive modification of this process should give rise to observable modification of the behavior. The updating adaptation adapted the matching between vestibular input and perceived body displacement in the surrounding world. The sensorimotor adaptation adapted the matching between vestibular input and the arm motor output necessary to keep the hand fixed in space during body rotation. Only the sensorimotor adaptation significantly altered the vestibular control of arm-reaching movements. Our results therefore suggest that during passive self-motion, the vestibular control of arm-reaching movements essentially derives from a sensorimotor process by which arm motor output is modified on-line to preserve hand trajectory in space despite body displacement. In contrast, the updating process maintaining up-to-date the egocentric representation of visual space seems to contribute little to generating the required arm compensation during body rotations.

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 Dates: 2005-08
 Publication Status: Published in print
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 Rev. Method: -
 Identifiers: BibTex Citekey: 3057
DOI: 10.1007/s00221-005-2263-4
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Title: Experimental Brain Research
  Other : Exp. Brain Res.
Source Genre: Journal
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Publ. Info: Heidelberg : Springer-Verlag
Pages: - Volume / Issue: 164 (4) Sequence Number: - Start / End Page: 431 - 441 Identifier: ISSN: 0014-4819
CoNE: https://pure.mpg.de/cone/journals/resource/954925398496